initial commit

2026-09-17 18:30:24 +00:00 · 2026-08-15 18:51:43 +02:00
commit 8a6a1fcf07
119 changed files with 11326 additions and 0 deletions
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+/*
+	chiptune3 (worklet version) - patched for <script> loading
+	Source: npm chiptune3, only export+import.meta.url changed
+*/
+
+const defaultCfg = {
+	repeatCount: -1,
+	stereoSeparation: 100,
+	interpolationFilter: 0,
+	context: false,
+}
+
+class ChiptuneJsPlayer {
+	constructor(cfg) {
+		this.config = {...defaultCfg, ...cfg}
+
+		if (this.config.context) {
+			if (!this.config.context.destination) {
+				throw('ChiptuneJsPlayer: This is not an audio context')
+			}
+			this.context = this.config.context
+			this.destination = false
+		} else {
+			this.context = new AudioContext()
+			this.destination = this.context.destination
+		}
+		delete this.config.context
+
+		this.gain = this.context.createGain()
+		this.gain.gain.value = 1
+
+		this.handlers = []
+
+		this.context.audioWorklet.addModule('/js/chiptune3.worklet.js')
+		.then(()=>{
+			this.processNode = new AudioWorkletNode(this.context, 'libopenmpt-processor', {
+				numberOfInputs: 0,
+				numberOfOutputs: 1,
+				outputChannelCount: [2]
+			})
+			this.processNode.port.onmessage = this.handleMessage_.bind(this)
+			this.processNode.port.postMessage({cmd:'config', val:this.config})
+			this.fireEvent('onInitialized')
+
+			this.processNode.connect(this.gain)
+			if (this.destination) this.gain.connect(this.destination)
+		})
+		.catch(e=>console.error(e))
+	}
+
+	handleMessage_(msg) {
+		switch (msg.data.cmd) {
+			case 'meta':
+				this.meta = msg.data.meta
+				this.duration = msg.data.meta.dur
+				this.fireEvent('onMetadata', this.meta)
+				break
+			case 'pos':
+				this.currentTime = msg.data.pos
+				this.order = msg.data.order
+				this.pattern = msg.data.pattern
+				this.row = msg.data.row
+				this.fireEvent('onProgress', msg.data)
+				break
+			case 'end':
+				this.fireEvent('onEnded')
+				break
+			case 'err':
+				this.fireEvent('onError', {type: msg.data.val})
+				break
+			case 'fullAudioData':
+				this.fireEvent('onFullAudioData', msg.data)
+				break
+			default:
+				console.log('Received unknown message',msg.data)
+		}
+	}
+
+	fireEvent(eventName, response) {
+		const handlers = this.handlers
+		if (handlers.length) {
+			handlers.forEach(function (handler) {
+				if (handler.eventName === eventName) {
+					handler.handler(response)
+				}
+			})
+		}
+	}
+	addHandler(eventName, handler) { this.handlers.push({eventName: eventName, handler: handler}) }
+	onInitialized(handler) { this.addHandler('onInitialized', handler) }
+	onEnded(handler) { this.addHandler('onEnded', handler) }
+	onError(handler) { this.addHandler('onError', handler) }
+	onMetadata(handler) { this.addHandler('onMetadata', handler) }
+	onProgress(handler) { this.addHandler('onProgress', handler) }
+	onFullAudioData(handler) { this.addHandler('onFullAudioData', handler) }
+
+	postMsg(cmd, val) {
+		if (this.processNode)
+			this.processNode.port.postMessage({cmd:cmd,val:val})
+	}
+	load(url) {
+		fetch(url)
+		.then(response => response.arrayBuffer())
+		.then(arrayBuffer => this.play(arrayBuffer))
+		.catch(e=>{this.fireEvent('onError', {type: 'Load'})})
+	}
+	play(val) { this.postMsg('play', val) }
+	stop() { this.postMsg('stop') }
+	pause() { this.postMsg('pause') }
+	unpause() { this.postMsg('unpause') }
+	togglePause() { this.postMsg('togglePause') }
+	setRepeatCount(val) { this.postMsg('repeatCount', val) }
+	setPitch(val) { this.postMsg('setPitch', val) }
+	setTempo(val) { this.postMsg('setTempo', val) }
+	setPos(val) { this.postMsg('setPos', val) }
+	setOrderRow(o,r) { this.postMsg('setOrderRow', {o:o,r:r}) }
+	setVol(val) { this.gain.gain.value = val }
+	selectSubsong(val) { this.postMsg('selectSubsong', val) }
+	seek(val) { this.setPos(val) }
+	getCurrentTime() { return this.currentTime }
+	decodeAll(ab) { this.postMsg('decodeAll', ab) }
+}
+
+window.ChiptuneJsPlayer = ChiptuneJsPlayer;